call RP.begin before Serial.begin, plus intro comment texts

red_peg/examples/b_temp_mon/b_temp_mon.ino~

-#include <Wire.h>
-#include <MCP342x.h>
-
-/* 
- Read a TMP36 sensor from MCP3428, channel 3
- */
-
-#define BAUD 115200
-
-// 0x68 is the default address for all MCP342x devices
-// on Red-Peg, the MCP3428 address is set to 0x6F
-uint8_t address = 0x6F;
-MCP342x adc = MCP342x(address);
-
-void setup(void)
-{
-  Serial.begin(BAUD);
-  Serial.println("starting temp_mon");
-  Wire.begin();
-
-  // Reset devices
-  MCP342x::generalCallReset();
-  delay(1); // MC342x needs 300us to settle, wait 1ms
-  
-  // Check device present
-  Wire.requestFrom(address, (uint8_t)1);
-  if (!Wire.available()) {
-    Serial.print("No device found at address ");
-    Serial.println(address, HEX);
-    while (1)
-      ;
-  } else {
-    Serial.println("MCP3248 found");
-  }
-
-}
-
-void loop(void)
-{
-  long value = 0;
-  MCP342x::Config status;
-  // Initiate a conversion; convertAndRead() will wait until it can be read
-  uint8_t err = adc.convertAndRead(MCP342x::channel3, MCP342x::oneShot,
-           MCP342x::resolution16, MCP342x::gain1,
-           1000000, value, status);
-  if (err) {
-    Serial.print("Convert error: ");
-    Serial.println(err);
-  }
-  else {
-    float voltage = value * (2.0 / 32575.0);
-    float temp = (voltage-0.5) * 100;
-
-    Serial.print("Value: ");
-    Serial.print(value);
-    Serial.print(", ");
-    Serial.print(voltage);
-    Serial.print("V, ");
-    Serial.print(temp);
-    Serial.print(" degC");
-    Serial.println();
-  }
-  
-  delay(1000);
-}
-

red_peg/examples/c_sensor_blink/c_sensor_blink.ino

+/* sensor_blink
+ *
+ * toggle the sensor active pin on Red-Peg board,
+ * without using the red_peg library
+ *
+ */
+
 #define SENSOR_ACTIVE_PIN 6
 #define BAUD 115200
 
-// the setup function runs once when you press reset or power the board
 void setup() {
   Serial.begin(BAUD);
   Serial.println(F("start sensor_blink"));
@@ -9,10 +15,9 @@ void setup() {
   pinMode(SENSOR_ACTIVE_PIN, OUTPUT);
 }
 
-// the loop function runs over and over again forever
 void loop() {
   digitalWrite(SENSOR_ACTIVE_PIN, HIGH);
-  delay(1000);              // wait for a second
+  delay(1000);
   digitalWrite(SENSOR_ACTIVE_PIN, LOW);
-  delay(1000);              // wait for a second
+  delay(1000);
 }

red_peg/examples/rp_ma4_20/rp_ma4_20.ino

+/* rp_ma4_20
+ *
+ * Take readings from the 4–20mA sensor port and show the
+ * ADC reading, mA value and equivalent 0–7000mm level reading
+ *
+ */
+
 #include <red_peg.h>
 red_peg RP;
 
 
 void setup() {
+  RP.begin();
+  delay(100);
   Serial.begin(BAUD);
   Serial.println("starting rp_ma4_20");
-  RP.begin();
 }
 
 void loop() {
@@ -13,7 +21,7 @@ void loop() {
   delay(100);
   t_SensorData depth = RP.get(MA4_20);
   RP.sensorsOff();
-  
+
   if (depth.sensor == MA4_20) {
     Serial.print("Value: ");
     Serial.print(depth.reading);
@@ -23,8 +31,6 @@ void loop() {
     Serial.print(RP.level(depth, 7000L));
     Serial.print(" mm");
     Serial.println();
-  } else {
-    Serial.println("no return from ADC");
+    delay(1000);
   }
-  delay(1000);
 }

red_peg/examples/rp_maxbotix/rp_maxbotix.ino

-/*
+/* rp_maxbotix
+ *
  * Reading the MB 7060 sensor to give distance readings
- * 
- * It is recommended to providing an external power supply
- * as the maxbotix ultrasound sensors can draw more than 
- * the 0.5A that a USB port is able to supply
- * 
- * Powering from USB only may lead to some crashes/restarts
- * because of the current draw
- * 
+ *
  */
+
 #include <red_peg.h>
 red_peg RP;
 
 
 void setup() {
-  delay(2000);
+  delay(1000);
   RP.begin();
+  delay(100);
 
   Serial.begin(BAUD);
   Serial.println("starting rp_maxbotix");
@@ -28,7 +24,7 @@ void loop() {
   delay(500);
   t_SensorData depth = RP.get(ANA);
   RP.sensorsOff();
-  
+
   if (depth.sensor == ANA) {
     RP.print_data(depth);
     Serial.print("Value: ");

red_peg/examples/rp_rtc_ds1307/rp_rtc_ds1307.ino

-// Date and time functions using a DS1307 RTC connected via I2C and Wire lib
+/* rp_rtc_ds1307
+ *
+ * Read the date and time from the Red-Peg onboard RTC
+ * report over serial.
+ *
+ */
 #include <red_peg.h>
 red_peg RP;
 
 void setup () {
-  Serial.begin(115200);
-  Serial.println(F("start rp_rtc_ds1307"));
   RP.begin();
   RP.sensorsOn();
   delay(100);
+  Serial.begin(BAUD);
+  Serial.println(F("start rp_rtc_ds1307"));
 }
 
 void loop () {
@@ -29,7 +34,7 @@ void loop () {
     Serial.print("Z");
     Serial.println();
   } else {
-    Serial.println(F("no RTC message received. \nLast message is:"));
+    Serial.println(F("no RTC message received. \r\nLast message is:"));
     RP.print_data(the_time);
   }
   delay(10000);

red_peg/examples/rp_sd_logger/rp_sd_logger.ino

+/* rp_sd_logger
+ *
+ * Record the TMP36 sensor values to the Red-Peg shield onboard
+ * SD card under the file: readings.csv
+ *
+ */
+ 
 #include <SPI.h>
 #include <SdFat.h>
 SdFat SD;
@@ -7,10 +14,11 @@ red_peg RP;
 
 void setup()
 {
+  RP.begin();
+  delay(100);
   // Open serial communications and wait for port to open:
   Serial.begin(BAUD);
   Serial.println("starting rp_sd_logger");
-  RP.begin();
 
   Serial.print("Initializing SD card...");
   pinMode(10, OUTPUT);
@@ -54,10 +62,10 @@ void loop()
       myFile.print(RP.degC(temp));
       // and a new line
       myFile.println();
-      
+
       // close the file:
       myFile.close();
-      
+
       // Then print what we sent to the Serial port
       RP.print_data(temp);
       Serial.println("done.");
@@ -67,5 +75,3 @@ void loop()
     }
   }
 }
-
-

red_peg/examples/rp_sensor_active/rp_sensor_active.ino

+/* rp_sensor_active
+ *
+ * toggles the sensor power and slave microcontroller
+ * on and off every second
+ * if you attach an LED + resistor across the
+ * 0–5V port, it will light when the port powers on
+ */
+
 #include <red_peg.h>
 red_peg RP;
 
-// the setup function runs once when you press reset or power the board
 void setup() {
+  RP.begin();
+  delay(100);
   Serial.begin(BAUD);
   Serial.println(F("start rp_sensor_active"));
-  RP.begin();
 }
 
-// the loop function runs over and over again forever
 void loop() {
   RP.sensorsOn();
-  delay(1000);              // wait for a second
+  Serial.print("ON...");
+  delay(1000);
   RP.sensorsOff();
-  delay(1000);              // wait for a second
+  Serial.println("OFF");
+  delay(1000);
 }

red_peg/examples/rp_temp_mon/rp_temp_mon.ino

+/* rp_temp_mon
+ *
+ * Take a reading from a TMP36 sensor in the 0–2V port
+ * on the red peg board and report it to the Serial monitor
+ *
+ */
+
 #include <red_peg.h>
 red_peg RP;
 
 
 void setup() {
-  Serial.begin(BAUD);
   RP.begin();
   RP.sensorsOn();
   delay(100);
+  Serial.begin(BAUD);
+  Serial.println(F("start rp_temp_mon"));
 }
 
 void loop() {

red_peg/examples/set_the_time/set_the_time.ino

+/* set_the_time
+ *
+ * Helper sketch to set a custom time on a DS1307
+ * (such as the one on the Red-Peg board).
+ * Type the date and time into the serial monitor, in the
+ * format: T YYYY MM DD hh mm ss
+ * Will then report the current time every 10 seconds
+ *
+ * Requires the Adafruit RTClib library
+ *
+ */
+
 #include <Wire.h>
 #include <RTClib.h>